PRIOR CONCURRENT THERAPY: Biologic therapy: Not specified Chemotherapy: No prior chemotherapy for metastatic disease No prior mitomycin, nitrosoureas, or platinum coordination complexes Prior adjuvant chemotherapy allowed if completed more than 6 months prior to relapse with metastases No more than 300 mg/m2 prior doxorubicin or 450 mg/m2 prior epirubicin Endocrine therapy: Not specified Radiotherapy: No prior radiotherapy to the brain or marrow-bearing pelvis Prior radiotherapy to lower pelvis allowed if the upper border of the radiotherapy field is below the upper border of the acetabulum No other prior radiotherapy to the pelvis Surgery: At least 2 weeks since prior major surgery Other: No other concurrent anti-cancer therapy